7947694780 has 24 divisors (see below), whose sum is σ = 16692046560. Its totient is φ = 3178718400.

The previous prime is 7947694771. The next prime is 7947694787. The reversal of 7947694780 is 874967497.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7947694787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225601 + ... + 258439.

It is an arithmetic number, because the mean of its divisors is an integer number (695501940).

Almost surely, 2^7947694780 is an apocalyptic number.

It is an amenable number.

7947694780 is an abundant number, since it is smaller than the sum of its proper divisors (8744351780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7947694780 is a wasteful number, since it uses less digits than its factorization.

7947694780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44949 (or 44947 counting only the distinct ones).

The product of its (nonzero) digits is 21337344, while the sum is 61.

The square root of 7947694780 is about 89149.8445315526. The cubic root of 7947694780 is about 1995.6316975800.

The spelling of 7947694780 in words is "seven billion, nine hundred forty-seven million, six hundred ninety-four thousand, seven hundred eighty".